回複：回複：回複：父母分開兩地辦移民好嗎? 母親現在美國, 父親現在中國, 手上有B2簽證

For travel purpose, AOS is indeed better, and when they receive AP, they can go travel to China. But if you parents have no need to visit US in the next 1 to 2 years, doing CP is as good as AOS.